<template>
    <el-image class="img-pre" :src="`${realSrc}`" fit="cover" :style="`width:${realWidth};height:${realHeight};`" :preview-src-list="realSrcList">
        <div slot="error" class="image-slot">
            <i class="el-icon-picture-outline"></i>
        </div>
    </el-image>
</template>

<script>
import { isExternal } from '@/utils/validate';

export default {
    name: 'ImagePreview',
    props: {
        src: {
            type: String,
            default: '',
        },
        width: {
            type: [Number, String],
            default: '',
        },
        height: {
            type: [Number, String],
            default: '',
        },
    },
    computed: {
        realSrc() {
            if (!this.src) {
                return;
            }
            let real_src = this.src.split(',')[0];
            if (isExternal(real_src)) {
                return real_src;
            }
            return process.env.VUE_APP_BASE_API + real_src;
        },
        realSrcList() {
            if (!this.src) {
                return;
            }
            let real_src_list = this.src.split(',');
            let srcList = [];
            real_src_list.forEach((item) => {
                if (isExternal(item)) {
                    return srcList.push(item);
                }
                return srcList.push(process.env.VUE_APP_BASE_API + item);
            });
            return srcList;
        },
        realWidth() {
            return typeof this.width == 'string' ? this.width : `${this.width}px`;
        },
        realHeight() {
            return typeof this.height == 'string' ? this.height : `${this.height}px`;
        },
    },
};
</script>

<style lang="scss" scoped>
.img-pre {
    border-radius: 4px;
    background-color: #dcdcdc;
    overflow: clip;

    ::v-deep .el-image__inner {
        transition: all 0.3s;
        cursor: pointer;
        &:hover {
            transform: scale(1.2);
        }
    }

    ::v-deep .image-slot {
        display: flex;
        justify-content: center;
        align-items: center;
        width: 100%;
        height: 100%;
        color: #909399;
        font-size: 30px;
    }
}
</style>
